Clarinet Case

This is a case for a B♭ clarinet that was purchased from a musical instrument store in the United States.
The material is likely fiberglass. It is very durable.
External dimensions (excluding hardware): Width 41cm, Depth 21cm, Height 11cm
Accessory storage area dimensions: 8.8cm x 6.8cm... A K&M stand or a small reed case will fit here.
As it is old, there are some dirt and rust on the metal parts.
I believe it is a good case for ensuring the safety of your instrument.